Comets above magnitude 11 or so (to keep them within binocular range) are shown in the chart below taken from the comets page of www.in-the-sky.org.
Only very faint comets are in the sky right now and most are close to or beyond the limit of the visibility of binoculars; medium sized telescopes and dark skies are required. The brightest comet in the sky currently is 67P/Churyumov-Gerasimenko, around magnitude 9, and it will continue to brighten into November, peaking at magnitude 8 or so around November 8. Comet 67P/Churyumov-Gerasimenko is rising by midnight now and stays in Gemini until the end of November. The following finder chart is taken from www.in-the-sky.org.